Tire comprising a tread made up of several elastomeric compounds

A tire with a radial carcass reinforcement, comprising:

• a crown reinforcement,
• a tread radially capping the crown reinforcement, and connected to two beads by two sidewalls, comprising at least two radially superposed layers of elastomeric compounds, wherein a first layer, forming the radially outer part of the tread, consists of a first elastomeric compound having a modulus G* greater than 1.8 MPa, wherein a second layer of elastomeric compounds radially on the inside of and in contact with the first layer of elastomeric compound, consists of at least three parts, wherein at least two of the parts of the second layer consist of different elastomeric compounds than one another and than the first elastomeric compound of the first layer, wherein axially outer parts of the second layer consist of a second elastomeric compound having a maximum value of tan (δ), denoted tan(δ)max, strictly less than 0.060, wherein at least another part of the second layer, which is axially in contact with at least at least one of the axially outer parts consists of a third elastomeric compound having a value of the modulus G* greater than 1.2 MPa and at least 5% less than that of the first elastomeric compound and a maximum value of tan (δ), denoted tan (δ)max, of between 0.060 and 0.120 at 60° C., and wherein the axially outer parts of the second layer are recessed relative to the remainder of the second layer such that the axially outer arts of the second layer do not come into contact with the ground during the life of the tire.